Cross-import error or am I doing it wrong?

[Vladar]

**foo.nim**
    
    
    import bar
    
    type
      Foo* = ref FooObj
      FooObj* = object of RootObj
        b: Bar
    

**bar.nim**
    
    
    import foo
    
    type
      Bar* = ref BarObj
      BarObj* = object of RootObj
    
    
    proc foo*(s: Bar, p: Foo) = discard
    

**run.nim**
    
    
    import foo, bar
    

> **nim c run.nim**
    
    
    bar.nim(8, 22) Error: undeclared identifier: 'Foo'
    

Is it because of cross-importing, or some kind of a bug? Error message is not 
very helpful.